From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 74B15C433FE for ; Tue, 9 Nov 2021 02:35:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5D8A1619E8 for ; Tue, 9 Nov 2021 02:35:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238394AbhKICi0 (ORCPT ); Mon, 8 Nov 2021 21:38:26 -0500 Received: from mail.kernel.org ([198.145.29.99]:53780 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241825AbhKICiU (ORCPT ); Mon, 8 Nov 2021 21:38:20 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id C16E86162E; Tue, 9 Nov 2021 02:35:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1636425335; bh=bH8NVEF8h754emt0lECOEG3GpEv0YuxD63iGq/+cJEo=; h=Date:From:To:Subject:In-Reply-To:From; b=y1j3oM6RFq6OLV+RKe2ERbAMfxYl0DO6qw3qut3rw65OHXR/hQjwRZO2FK64y5WhF gIbivwkwfyDYetu2z78EbQ0f54iu6iao8Nx1LbUmX0PK04FQy5OBMPG5SrDtJjg43h pjKqA1jMExsH4iFDITq29P7OQeVB+d3CQKKfDIuA= Date: Mon, 08 Nov 2021 18:35:34 -0800 From: Andrew Morton To: akpm@linux-foundation.org, andreyknvl@gmail.com, bigeasy@linutronix.de, dvyukov@google.com, elver@google.com, linux-mm@kvack.org, mm-commits@vger.kernel.org, rostedt@goodmis.org, torvalds@linux-foundation.org, williams@redhat.com Subject: [patch 78/87] kcov: allocate per-CPU memory on the relevant node Message-ID: <20211109023534.AH0YADhtP%akpm@linux-foundation.org> In-Reply-To: <20211108183057.809e428e841088b657a975ec@linux-foundation.org> User-Agent: s-nail v14.8.16 Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org From: Sebastian Andrzej Siewior Subject: kcov: allocate per-CPU memory on the relevant node During boot kcov allocates per-CPU memory which is used later if remote/ softirq processing is enabled. Allocate the per-CPU memory on the CPU local node to avoid cross node memory access. Link: https://lkml.kernel.org/r/20210923164741.1859522-4-bigeasy@linutronix.de Link: https://lore.kernel.org/r/20210830172627.267989-4-bigeasy@linutronix.de Signed-off-by: Sebastian Andrzej Siewior Acked-by: Dmitry Vyukov Acked-by: Marco Elver Tested-by: Marco Elver Reviewed-by: Andrey Konovalov Cc: Clark Williams Cc: Steven Rostedt Signed-off-by: Andrew Morton --- kernel/kcov.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/kernel/kcov.c~kcov-allocate-per-cpu-memory-on-the-relevant-node +++ a/kernel/kcov.c @@ -1034,8 +1034,8 @@ static int __init kcov_init(void) int cpu; for_each_possible_cpu(cpu) { - void *area = vmalloc(CONFIG_KCOV_IRQ_AREA_SIZE * - sizeof(unsigned long)); + void *area = vmalloc_node(CONFIG_KCOV_IRQ_AREA_SIZE * + sizeof(unsigned long), cpu_to_node(cpu)); if (!area) return -ENOMEM; per_cpu_ptr(&kcov_percpu_data, cpu)->irq_area = area; _